Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Numerator:
Net income (loss)	$ 311	$ (905)	$ 1,170	$ 1,097
Less: Allocation of earnings to participating securities	(2)	5	(6)	(10)
Net income (loss) allocated to common stock	309	(900)	1,164	1,087
Basic earnings per share computation:
Net income (loss) allocated to common stock	$ 309	$ (900)	$ 1,164	$ 1,087
Weighted average common shares outstanding, including shares considered participating securities	7,970	7,859	7,901	7,855
Less: Weighted average participating securities outstanding	(52)	(46)	(40)	(68)
Weighted average shares of common stock	7,918	7,813	7,861	7,787
Basic earnings (loss) per share	$ 0.04	$ (0.12)	$ 0.15	$ 0.14
Diluted earnings per share computation:
Net income (loss) allocated to common stock	$ 309	$ (900)	$ 1,164	$ 1,087
Undistributed earnings re-allocated to participating securities	2		6
Numerator for diluted earnings (loss) per share	$ 311	$ (900)	$ 1,170	$ 1,087
Weighted average common shares outstanding for basic earnings per share	7,918	7,813	7,861	7,787
Incremental shares from stock options	1	7	1
Weighted average shares and dilutive potential common shares	7,919	7,820	7,862	7,787
Diluted earnings (loss) per share	$ 0.04	$ (0.12)	$ 0.15	$ 0.14